From: Steven Rostedt <srostedt@redhat.com>
Date: Tue, 17 Feb 2009 18:12:12 +0000 (-0500)
Subject: ftrace: show unlimited when traceon or traceoff has no counter
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=35ebf1caa4854ad5ba25f3a72967acc064147994;p=linux-beck.git

ftrace: show unlimited when traceon or traceoff has no counter

Impact: clean up

The traceon and traceoff function probes are confusing to developers
to what happens when a counter is not specified. This should help
clear things up.

 # echo "*:traceoff" > set_ftrace_filter
 # cat /debug/tracing/set_ftrace_filter

  #### all functions enabled ####
  do_fork:traceoff:unlimited

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---

diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c
index 6ea73ed03bfa..4c113a8c466f 100644
--- a/kernel/trace/trace_functions.c
+++ b/kernel/trace/trace_functions.c
@@ -296,7 +296,9 @@ ftrace_trace_onoff_print(struct seq_file *m, unsigned long ip,
 	else
 		seq_printf(m, "traceoff");
 
-	if (count != -1)
+	if (count == -1)
+		seq_printf(m, ":unlimited\n");
+	else
 		seq_printf(m, ":count=%ld", count);
 	seq_putc(m, '\n');